Rotax Engine Forum (32)

Discussions Replies Latest Activity

Welcome to the Rotax Engine Forum!

Welcome to the Rotax Engine Forum!  We invite our members with Rotax engines, and those with interest in Rotax engines, to post their quest…

Started by John Austin

11 Dec 12, 2019
Reply by John Austin

912 install on a 701

It's time to start the install of the 912 to my 701. I purchased the engine from my uncle after he tore his plane off the trailer while hau…

Started by Vance Simons

2 Jul 23, 2019
Reply by Vance Simons

Add-ons to Rotax could be pricy?

I have found at the Rotax site price for 912U:LS as much as $6500. But they charge another $140 for second throttle. The cab heat manifold…

Started by Gino Shtirlits

2 Jul 20, 2019
Reply by Gino Shtirlits

Carb icing issues

HI All Has anyone encountered engine vibration on days with high relative humidity after descending from 4500 feet +? to about 1000' agl?…

Started by Herb Hornig

4 Jul 15, 2019
Reply by Herb Hornig

Electroaire Switches

Zenith supplied an Electroaire combination "mag" starter switch unit with my 701 kit. This is because Rotax no longer wants you to use the…

Started by Thomas Heiting

1 Jul 2, 2019
Reply by Jim and Amelia Isaacs

Charging issue

So about 2 weeks ago I was flying along and started having an intermittent low volt light come on with a drop in the voltage to just above…

Started by Charles Clayton

3 Jun 12, 2019
Reply by Charles Clayton

Don’t fret...

I recently noticed a damp patch on top of my Rotax 912uls engine while doing a preflight check. I couldn’t see any obvious source of the le…

Started by Shay King

6 Apr 16, 2019
Reply by Ken Ryan


I’m curious as to what people think should be the fuel to use in the 912 (ULS) and then what they actually do. I’ve been using the highest…

Started by Paul Sanders

5 Feb 13, 2019
Reply by Bob Hartunian

Electrical questions

Anyone out there able and willing to talk how they wired, switched, and protected their external voltage regulator on their 912? If so plea…

Started by Jim and Amelia Isaacs

0 Feb 12, 2019

Coolant overflow bottle

The Zenith 912 FWF kit comes with a coolant overflow bottle that looks to me like a medical irrigation bottle, but the published installati…

Started by Jim and Amelia Isaacs

9 Jan 17, 2019
Reply by Jim and Amelia Isaacs


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